Create a new room in a space (#6061)

* Add `SpaceService.editableSpaces` and `SpaceService.addChildToSpace`

* Add `parentSpace` to `CreateRoomConfig`

* Allow setting a parent space to a room in `ConfigureRoomPresenter`, make sure the room is added to the parent space when creating it

* `ConfigureRoomPresenter`: Load the list of possible spaces a room can be added to

* Refactor `RoomVisibilityState` to internally use `JoinRuleItem`

This gets rid of `RoomAccess` and `RoomAccessItem`, and it will allow us to map the join rule items in a cleaner way to both join rules and the UI

* Implement the UI changes:

- Display the parent space.
- Allow selecting a new one.
- Import needed strings.

* Fix existing tests

* Add `@Immutable` annotation to `SpaceRoom`, since it was detected as unstable.

Maybe because of `RoomType`?

* Update screenshots

---------

Co-authored-by: ElementBot <android@element.io>

libraries/matrix/api/src/main/kotlin/io/element/android/libraries/matrix/api/spaces/SpaceRoom.kt

@@ -8,6 +8,7 @@
 
 package io.element.android.libraries.matrix.api.spaces
 
+import androidx.compose.runtime.Immutable
 import io.element.android.libraries.matrix.api.core.RoomAlias
 import io.element.android.libraries.matrix.api.core.RoomId
 import io.element.android.libraries.matrix.api.room.CurrentUserMembership
@@ -16,6 +17,7 @@ import io.element.android.libraries.matrix.api.room.join.JoinRule
 import io.element.android.libraries.matrix.api.user.MatrixUser
 import kotlinx.collections.immutable.ImmutableList
 
+@Immutable
 data class SpaceRoom(
     val rawName: String?,
     val displayName: String,

libraries/matrix/api/src/main/kotlin/io/element/android/libraries/matrix/api/spaces/SpaceService.kt

@@ -21,6 +21,11 @@ interface SpaceService {
 
     fun spaceRoomList(id: RoomId): SpaceRoomList
 
+    /**
+     * Get the list of spaces in which the current user can modify their rooms (adding or removing them).
+     */
+    suspend fun editableSpaces(): Result<List<SpaceRoom>>
+
     fun getLeaveSpaceHandle(spaceId: RoomId): LeaveSpaceHandle
 
     /**